<template>
  <!--<el-button type="info" @click="logout">退出</el-button>-->
  <el-container class="home-container">
    <!-- 头部区 -->
    <el-header>
      <div>
        <img src="../assets/logo.png" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 内容区 -->
    <el-container>
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse" :collapse-transition="false" router default-active="users">
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
          <!--<el-submenu index="1">-->
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <!--<i class="iconfont icon-user"></i>-->
              <span>{{item.authName}}</span>
              <!--<span>用户管理</span>-->
            </template>
            <!-- 二级菜单的模板区域 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id">
            <!--<el-menu-item index="users" @click="saveNavState('/' + subItem.path)">-->
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
                <!--<span>用户列表</span>-->
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
        <!-- 侧边栏菜单区域 -->
      </el-aside>
      <el-main>
        <!-- 路由占位符 -->
        <!--<router-link></router-link>
        <router-view/>-->
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data () {
    return {
      // 左侧菜单数据
      menuList: [],
      // icon图标一级菜单循环解决方法
      iconsObj: {
        '147': 'el-icon-magic-stick',
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpingouwudai2',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  // 退出功能原来 只需要把本地的token销毁即可，必须重新登录生成一个新的 token 才能访问页面
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    }
  },
  // 获取所有的菜单
  async getMenuList () {
    const { data: res } = await this.$http.get('/menus')
    if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
    this.$message.success(res.meta.msg)
    res.data.unshift(this.welcome)
    this.menuList = res.data
    console.log(res, 'menus')
  },
  // 点击按钮，切换菜单的折叠与展开
  toggleCollapse () {
    this.isCollapse = !this.isCollapse
  },
  // 保存链接的激活状态
  saveNavState (activePath) {
    window.sessionStorage.setItem('activePath', activePath)
    this.activePath = activePath
    // console.log(this.$route.path)
  }
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 20px;
  color: #fff;
  > div{
    display: flex;
    align-items: center;
    img{
    height: 60px;
    }
    span{
     margin-left: 15px;
    }
  }
}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4A5364;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
